How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Nuts for Compression Fittings for Stainless Steel Tubing
Use these nuts with compression sleeves and fittings to create a strong seal on stainless steel tubing. They are 316 stainless steel for excellent corrosion resistance. These nuts are also known as bite fittings.
ISO and DIN nuts meet international dimensional standards.
- For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -75° to 750° F
- Tubing: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
- Specifications Met: ISO 8434-1, DIN 2353
For Tube | |||||
|---|---|---|---|---|---|
| OD, mm | Wall Thick., mm | Nut Material | Max. Pressure | Each | |
| 6 | 1 | 316 Stainless Steel | 7,200 psi @ 72° F | 0000000 | 00000 |
| 8 | 1-1.5 | 316 Stainless Steel | 7,200 psi @ 72° F | 0000000 | 0000 |
| 10 | 1-2 | 316 Stainless Steel | 7,200 psi @ 72° F | 0000000 | 0000 |
| 12 | 1-2 | 316 Stainless Steel | 5,800 psi @ 72° F | 0000000 | 0000 |
| 15 | 1-2 | 316 Stainless Steel | 5,800 psi @ 72° F | 0000000 | 00000 |
| 18 | 1.5-2 | 316 Stainless Steel | 5,800 psi @ 72° F | 0000000 | 00000 |
| 22 | 1.5-2 | 316 Stainless Steel | 3,600 psi @ 72° F | 0000000 | 00000 |
| 28 | 1.5-2 | 316 Stainless Steel | 3,600 psi @ 72° F | 0000000 | 00000 |
Nuts for Precision Compression Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -420° to 1200° F
- Tubing: Use with seamless or welded 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Compatible With: Parker CPI
Use these nuts with precision compression sleeves and fittings to create a strong seal on stainless steel tubing. Made to tighter tolerances than other nuts, these are designed for high-precision applications. Nuts are 316 stainless steel for excellent corrosion resistance. They have a molybdenum disulfide coating that acts as a lubricant for easy installation.
For Tube | |||||
|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Each | |
| 1/16" | 0.02" | 316 Stainless Steel | 7,500 psi @ 72° F | 00000000 | 00000 |
| 1/8" | 0.035" | 316 Stainless Steel | 5,500 psi @ 72° F | 00000000 | 0000 |
| 3/16" | 0.035" | 316 Stainless Steel | 5,500 psi @ 72° F | 00000000 | 0000 |
| 1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | 00000000 | 0000 |
| 5/16" | 0.035" | 316 Stainless Steel | 3,200 psi @ 72° F | 00000000 | 0000 |
| 3/8" | 0.035" | 316 Stainless Steel | 2,600 psi @ 72° F | 00000000 | 0000 |
| 1/2" | 0.035" | 316 Stainless Steel | 2,100 psi @ 72° F | 00000000 | 0000 |
| 5/8" | 0.049" | 316 Stainless Steel | 2,100 psi @ 72° F | 00000000 | 00000 |
| 3/4" | 0.049" | 316 Stainless Steel | 2,100 psi @ 72° F | 00000000 | 00000 |
Nuts for High-Pressure Compression Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -75° to 750° F
- Tubing: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
- Specifications Met: DIN 2353, ISO 8434
Tighten these nuts onto high-pressure compression sleeves and fittings to create a strong seal on stainless steel tubing. Made from 316 stainless steel, they won’t corrode from water, chemicals, or salt spray. These nuts meet ISO 8434 (formerly DIN 2353), which is an international standard for tube fitting dimensions and materials.
For Tube | |||||
|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Nut Material | Maximum Pressure | Each | |
| 6 | 1 | 316 Stainless Steel | 11,000 psi @ 72° F | 00000000 | 00000 |
| 8 | 1-1.5 | 316 Stainless Steel | 11,000 psi @ 72° F | 00000000 | 0000 |
| 10 | 1-2 | 316 Stainless Steel | 11,000 psi @ 72° F | 00000000 | 0000 |
| 12 | 1-2 | 316 Stainless Steel | 9,000 psi @ 72° F | 00000000 | 0000 |
| 16 | 2-3 | 316 Stainless Steel | 9,000 psi @ 72° F | 00000000 | 00000 |
| 20 | 2-3 | 316 Stainless Steel | 6,000 psi @ 72° F | 00000000 | 00000 |
Nuts for Precision Compression Fittings for Copper Tubing
- For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -40° to 350° F
- Tubing: Use with seamless copper that meets ASTM B68, ASTM B75, or ASTM B88
- Compatible With: Parker CPI
Use these nuts with precision compression sleeves and fittings to create a strong seal on copper tubing. Made to tighter tolerances than other nuts, they are designed for high-precision applications. They are brass for good corrosion resistance.
Nuts that have a molybdenum-disulfide finish are easy to install because the finish acts as a lubricant.
For Tube | |||||
|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Each | |
| 1/16" | 0.02" | Molybdenum-Disulfide-Coated Brass | 3,800 psi @ 72° F | 00000000 | 00000 |
| 1/8" | 0.035" | Molybdenum-Disulfide-Coated Brass | 2,700 psi @ 72° F | 00000000 | 0000 |
| 3/16" | 0.035" | Molybdenum-Disulfide-Coated Brass | 1,200 psi @ 72° F | 00000000 | 0000 |
| 1/4" | 0.035" | Molybdenum-Disulfide-Coated Brass | 1,200 psi @ 72° F | 00000000 | 0000 |
| 5/16" | 0.035" | Brass | 1,200 psi @ 72° F | 00000000 | 0000 |
| 3/8" | 0.035" | Molybdenum-Disulfide-Coated Brass | 1,000 psi @ 72° F | 00000000 | 0000 |
| 1/2" | 0.049" | Molybdenum-Disulfide-Coated Brass | 1,200 psi @ 72° F | 00000000 | 0000 |
| 5/8" | 0.065" | Molybdenum-Disulfide-Coated Brass | 1,300 psi @ 72° F | 00000000 | 0000 |
| 3/4" | 0.065" | Molybdenum-Disulfide-Coated Brass | 1,000 psi @ 72° F | 00000000 | 0000 |
Nuts for Nickel-Plated Brass Compression Fittings for Copper Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Lubricants, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -75° to 550° F
- Tubing: Use with copper
- Specifications Met: DIN 3870
Create a strong seal on copper tubing when you couple these nuts with compression sleeves and fittings. Made of nickel-plated brass, they resist corrosion better than plain brass. All meet DIN 3870, which is an international standard for tube fitting dimensions.
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Nut Material | Maximum Pressure | Length, mm | Each | |
Short Nuts | ||||||
| 4 | 1 | Nickel-Plated Brass | 1,800 psi @ 72° F | 11 | 00000000 | 00000 |
| 6 | 1 | Nickel-Plated Brass | 2,500 psi @ 72° F | 12 | 00000000 | 000 |
| 8 | 1 | Nickel-Plated Brass | 2,100 psi @ 72° F | 12 | 00000000 | 000 |
| 10 | 1 | Nickel-Plated Brass | 1,600 psi @ 72° F | 16 | 00000000 | 0000 |
| 12 | 1 | Nickel-Plated Brass | 1,000 psi @ 72° F | 16 | 00000000 | 0000 |
| 14 | 1 | Nickel-Plated Brass | 1,000 psi @ 72° F | 19 | 00000000 | 0000 |
| 15 | 1 | Nickel-Plated Brass | 1,000 psi @ 72° F | 17 | 00000000 | 0000 |
Gauge Guards
Also known as isolators or diaphragm seals, these protect gauges from corrosive process media. Fill guards with hydraulic oil (not included) before use.
316 stainless steel guards provide excellent corrosion and chemical resistance and can handle higher temperatures and pressures than plastic guards.
Guards with drain port allow you to remove process media.
Pipe Connections | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Inlet | Outlet | Gasket Material | For Use With | Min. Pressure, psi | Max. Pressure | Max. Temp., °F | Ht. | Each | |
316 Stainless Steel Body | |||||||||
| 1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 3/4" | 0000000 | 0000000 |
| 1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 3/4" | 0000000 | 000000 |
| 1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 1/2" | 0000000 | 000000 |
316 Stainless Steel Body with 1/4 NPT Female Drain Port | |||||||||
| 1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
| 1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
| 1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |